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Subject[RFC 10/11] mm: debug: kill VM_BUG_ON_MM
Date
Just use VM_BUG() instead.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
---
include/linux/mmdebug.h | 8 --------
kernel/fork.c | 2 +-
mm/gup.c | 2 +-
mm/huge_memory.c | 2 +-
mm/mmap.c | 2 +-
mm/pagewalk.c | 2 +-
6 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h
index 5106ab5..b810800 100644
--- a/include/linux/mmdebug.h
+++ b/include/linux/mmdebug.h
@@ -20,13 +20,6 @@ char *format_mm(const struct mm_struct *mm, char *buf, char *end);
} \
} while (0)
#define VM_BUG_ON(cond) VM_BUG(cond, "%s\n", __stringify(cond))
-#define VM_BUG_ON_MM(cond, mm) \
- do { \
- if (unlikely(cond)) { \
- pr_emerg("%pZm", mm); \
- BUG(); \
- } \
- } while (0)
#define VM_WARN_ON(cond) WARN_ON(cond)
#define VM_WARN_ON_ONCE(cond) WARN_ON_ONCE(cond)
#define VM_WARN_ONCE(cond, format...) WARN_ONCE(cond, format)
@@ -41,7 +34,6 @@ static char *format_mm(const struct mm_struct *mm, char *buf, char *end)
}
#define VM_BUG(cond, fmt...) BUILD_BUG_ON_INVALID(cond)
#define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)
-#define VM_BUG_ON_MM(cond, mm) VM_BUG_ON(cond)
#define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)
#define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
#define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)
diff --git a/kernel/fork.c b/kernel/fork.c
index 18c44fb..36a7c36 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -645,7 +645,7 @@ static void check_mm(struct mm_struct *mm)
mm_nr_pmds(mm));

#if defined(CONFIG_TRANSPARENT_HUGEPAGE) && !USE_SPLIT_PMD_PTLOCKS
- VM_BUG_ON_MM(mm->pmd_huge_pte, mm);
+ VM_BUG(mm->pmd_huge_pte, "%pZm", mm);
#endif
}

diff --git a/mm/gup.c b/mm/gup.c
index 0b851ac..57cc2de 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -848,7 +848,7 @@ long populate_vma_page_range(struct vm_area_struct *vma,
VM_BUG_ON(end & ~PAGE_MASK);
VM_BUG(start < vma->vm_start, "%pZv", vma);
VM_BUG(end > vma->vm_end, "%pZv", vma);
- VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_sem), mm);
+ VM_BUG(!rwsem_is_locked(&mm->mmap_sem), "%pZm", mm);

gup_flags = FOLL_TOUCH | FOLL_POPULATE;
/*
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index d4b20cd..cda190f 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2072,7 +2072,7 @@ int __khugepaged_enter(struct mm_struct *mm)
return -ENOMEM;

/* __khugepaged_exit() must not run from under us */
- VM_BUG_ON_MM(khugepaged_test_exit(mm), mm);
+ VM_BUG(khugepaged_test_exit(mm), "%pZm", mm);
if (unlikely(test_and_set_bit(MMF_VM_HUGEPAGE, &mm->flags))) {
free_mm_slot(mm_slot);
return 0;
diff --git a/mm/mmap.c b/mm/mmap.c
index f2db320..311a795 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -464,7 +464,7 @@ static void validate_mm(struct mm_struct *mm)
pr_emerg("map_count %d rb %d\n", mm->map_count, i);
bug = 1;
}
- VM_BUG_ON_MM(bug, mm);
+ VM_BUG(bug, "%pZm", mm);
}
#else
#define validate_mm_rb(root, ignore) do { } while (0)
diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index 29f2f8b..952cddc 100644
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -249,7 +249,7 @@ int walk_page_range(unsigned long start, unsigned long end,
if (!walk->mm)
return -EINVAL;

- VM_BUG_ON_MM(!rwsem_is_locked(&walk->mm->mmap_sem), walk->mm);
+ VM_BUG(!rwsem_is_locked(&walk->mm->mmap_sem), "%pZm", walk->mm);

vma = find_vma(walk->mm, start);
do {
--
1.7.10.4


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